KR200251538Y1 - Automatic locking system of parking brake - Google Patents

Abstract

The present invention relates to a locking device for a parking brake, by using a solenoid, when the power of the key box is connected, the solenoid device is operated and the lock is released. When the power is shut off during parking, the fastener is connected by the spring restoring force in the solenoid device. Locking function by protruding the lock, and the locking function only performs in the release direction of the parking brake lever due to the shape of the fastener, and the lever is operated in the fastening direction. To prevent accidents caused. In addition, when the parking brake lever is released, the lever protrusion 2a moves the movable contact of the switch attached to the ratchet in order to prevent power waste and overload due to the continuous operation of the solenoid device even when the power is connected (while driving). It is characterized by performing an automatic locking function by cutting off the power connected to the solenoid device by a fixed contact and a contact short circuit.

Description

Automatic locking system of parking brake}

The present invention relates to a locking device of the vehicle, and the driver does not need any special operation to operate the locking device, it is possible to automatically lock and release the lever. That is, since the solenoid device is operated according to whether the key box 9 and the switch 6 are connected to the power supply, the lever 2 is locked and released, and thus the parking brake lock device that can prevent damage caused by theft and misoperation. will be.

In general, a parking brake device is a device for forcibly braking the rear wheels to maintain a parking state when a vehicle is parked. In a conventional brake device having only such a function, the tension of the cable is generally caused by the operation of the operating lever. Alternatively, the brake shoes are brought into close contact with the rim or drum to brake the rear wheels by the friction force generated at that time. That is, in the conventional parking brake as described above, the lever operation is enabled by pressing only the operation button 1 of the brake lever 2 and separating the pole 4 from the ratchet teeth 5a regardless of parking, stopping or driving. .

Meanwhile, in recent years, theft of vehicles has occurred frequently, so that the car engines can be re-sold by stamping numbers. In order to prevent such theft, various anti-theft devices, such as theft alarm and the handle lock, are currently commercialized and installed in vehicles. However, these devices can be driven with the brakes on the rear wheels released, which cannot fundamentally prevent theft.

In addition, since the conventional brake device does not have a proper device for preventing misoperation of the operation lever when the vehicle is parked or stopped, an infant or child may mishandle the parking brake operation lever 2 in a vehicle on a slope. There is always a potential for accidents as the braking force is released.

When analyzing the conventional patent pending or registered parking brake locks, the installation of the key bundle for unlocking is less practical due to inconvenience because the driver has to lock and release it as a separate operation whenever necessary, The form of the equalizer installed on the cable to be terminated through the control cable is also inconvenient, and there is no anti-theft function as it can be terminated by applying tension to the cable in the vehicle. There is an economic problem of cost increase in the way of sensing by the sensor or the vehicle CPU and controlling the motor.

Accordingly, this paper has been devised for the purpose of solving the problems caused by theft and misoperation. That is, the fastener 101 in the solenoid device protrudes when the vehicle is turned off when the key box of the vehicle is turned off, and the brake lever 2 is locked. At this time, even when the fastener is protruded, the applicant has designed the locking function only in the release direction of the parking brake lever due to the shape of the fastener and the lever is operated in the fastening direction (see FIG. 4). In the power connection state, the solenoid device is operated so that the fastener moves to the inside of the solenoid housing to release the automatic locking function, and the switch to prevent the overload and power wasted due to the continuous power supply. (6) was connected in series so that the power supply was cut off when the lever was at the bottom. For this purpose, the conventional brake state display switch 6 was used.

1 is a configuration of parking brake according to the prior art

2 is a configuration of parking brake according to the present invention

Figure 3: Detail view of the solenoid device mounting portion of Figure 2

4 is a cross-sectional view taken along the line A-A of FIG.

5 is a flowchart of operation cases of the present invention.

<Explanation of symbols for main parts of drawing>

1: operation button, 2: brake lever, 3: rod

4: Pawl, 5: Ratchet, 5a: Ratchet teeth

6: switch, 6a: switch contact,

6b: switch moving contact, 7: hinge axis, 8: rivet,

9: start-up keybox, 10: battery, 11: wire, 100: solenoid unit,

101: fastener, 102: solenoid, 103: restoring spring,

104: solenoid housing, 105: fastening hole, 105a: locking portion

The present invention for achieving the above object, the solenoid device 100 is mounted / equipped on the brake lever (2), the solenoid device is a fastener 101 that moves depending on whether the power supply, when connecting the power It consists of a solenoid 102 for inserting the fastener into the housing, a restoring spring 103 for projecting the fastener when the power is cut off, the housing, the end shape of the fastener 101 in the solenoid device as shown in FIG. The surface of the lever fastening direction is inclined obliquely and the end surface of the fastener in the brake lever release direction is parallel to the surface of the fastening hole. (Sliding) is possible to operate the lever and the lever in the brake lever release direction is configured to be impossible, the solenoid 102 is based on Fleming's right screw law When the original supply, install a bobbin (bobbin) wound around the coil so that the fastener is inserted into the housing, and a restoring spring 103 is installed between the fastener and the housing 104, and the fastener is disconnected when the power is turned off to the solenoid 102. It is configured to protrude and lock by elastic force,

The elastic force of the spring is less than the magnetic force generated by the solenoid, and the magnetic field and elastic force are adjusted so that the fastener is smoothly fastened to the fastening hole when the magnetic force is removed.

When the fastener protrudes, it is formed by drilling a fastening hole 105 fastened in the ratchet 5 to serve as a clamp of the fastener, and the fastening hole drilled in the ratchet has a circular axis of the rivet hinge shaft 7 as a central axis. The fastening hole is formed by spaces to form a moving path, and the fastening holes are formed by tightly connected seating holes to be fastened to the fastener even at a specific position within the moving path along the moving path. Key box (9) for connecting the power supply for power supply in the solenoid device at the time of power connection; Battery (10) for supplying power in the solenoid device according to the power connection state of the key box. A switch 6 which solves the overload and the waste of power due to the continuous supply of power in the solenoid device according to the box power connection; A switch button part 6c receiving a load by the protrusion 2a, a moving contact 6b connected to the button part and moving according to the movement of the button part, and a spring inside the switch restoring the moving contact when the load of the lever protrusion is removed. (6d), it is fixed and consists of a fixed contact (6a) that the contact is connected when the mobile contact is restored and blocks the contact when the mobile contact moves downward,

The switch is mounted on the lower right side of the lever 2 so that the contact is connected or disconnected according to the load flow transmitted from the protrusion 2a of the lever 2, thereby interrupting the power supplied to the solenoid device while the parking brake is released. The key box 9, the battery 10, the solenoid device 100, and the switch 6 are wired in series so that the solenoid is connected only when the contacts of the key box and the switch are connected at the same time. Configure the device to work.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 2 is a view illustrating a parking brake configuration according to the present invention. When the vehicle is released from the parking brake fastening state, the brake lever 2 is slightly lifted up by the driver's hand. Pressing the operation button (1) while lifting the force is transmitted to the rod (3) connected to the button. The force transmitted to the rod disengages the lever downwards (brake release direction) while the pawl 4 connected to the rod is rotated clockwise about the riveted axis from the ratchet teeth 5a which are toothed with the pawl. When the parking brake is released, the driver lifts the lever while separating the pole 4 and the ratchet teeth 5a by pressing the button 1 by hand. When the button 1 is released after the lever is lifted, the brake is fixed while the lever and the ratchet teeth are engaged with each other. As shown in FIG. Is mounted vertically on the lever (2), and the hole corresponding to the fastener is drilled in the lever of the portion where the fastener 101 in the solenoid device 100 protrudes, and located at the vertical bottom of the hole drilled in the lever. By drilling the fastening hole 105 on the ratchet 5, the lever 4 is configured to lock when the fastener is protruded even if the pole 4 and the ratchet teeth 5a are separated, and the key box 9 and the switch 6 The solenoid device, the switch, the key box, and the battery 10 are configured in series so as to automatically perform the locking function according to whether or not the contact is connected. The switch 6 is parked in the conventional upper panel of the driver's seat. In addition to the conventional switch which functions to connect / disconnect the power supply of the fastening state indicator of the rake, additional wiring connection was made to configure the circuit of this paper so that the power is connected when the parking brake is in the fastening state. The key box 9 also uses a conventional key box which plays a role of conventionally starting in a vehicle and supplies power to each part of the vehicle, so that the power is connected to the circuit according to the present specification when the key box is connected to the power source. 3 is a detailed view of the solenoid device mounting part of FIG. 2, wherein the fastening hole 105 is formed along the center movement path of the fastener in the solenoid device fixed on the lever, and the lever is positioned at a specific position. Even if it is positioned to form a fastening hole with a seating hole tightly connected to be fastened to the fastener. At this time, when the seating holes are closely overlapped, the engaging portion 105a is formed in the fastening hole as shown in Fig. 3. When the brake lever is located at the lowermost position where the brake lever is released, the lever is moved upward for fastening the parking brake. The stationary contact and the moving contact should be connected, but the solenoid device is operated to insert the fastener into the housing and the fastener is separated from the fastener. That is, when the lever is located at the lowest end, the movable contact 6b and the fixed contact 6a are separated by a constant clearance. The switch contact is connected only when the lever has to be moved upward by the center of the rivet 8 by the play. If the locking portion 105a is formed in the section, the inclined surface of the fastener always slides with the locking portion 105a of the fastening hole, and wear or noise occurs. In order to improve such a problem, the fastener is constituted so that the fastener is not interfered by the locking portion 105a of the fastening hole. The operation principle of the solenoid device 100 is the odor of the solenoid 102 inside. When the DC current flows in the direction of the right-hand screw movement within the rated current in the coil, the dense magnetic field is formed in the direction of the right-hand screw propagation in the inner space of the through-hole located in the coil. Generates a force to move in the direction. Due to this force, the fastener is inserted into the housing 104 and the fastener and the fastener are separated to enable the lever operation. On the contrary, when the power is cut off, the brake actuating lever is locked by inserting the fastener into the fastening hole 105 drilled in the ratchet with the restoring force of the spring 103 as shown in FIG. 4. In order to be able to lock in the parking brake release direction in the protruded state, but in order to enable lever operation in the fastening direction, the shape of the end portion of the fastener 101 is as shown in FIG. The obliquely inclined shape and the surface in the lever release direction are parallel to the surface of the fastening hole 105 so that the fastening hole restrains the brake lever in the release direction and the lever can be operated in the lever fastening direction. 4 is a cross-sectional view taken along the line AA in FIG. 3, in which the fastener is protruded into a fastening hole drilled in the ratchet by spring restoring force when the power is cut off in the solenoid device. The solenoid device is fixedly mounted to the lever (2) and the ratchet is fixed to the vehicle body. The parking brake lock device of the present invention configured as described above has a different operation form depending on the contact connection state between the switch and the key box. It will be described in detail in each case below.

Figure 5 is a flow chart according to the operation case has a total of four cases (A, B, C, D) according to the contact connection state of the key box and the switch. When the lever is fastened, the solenoid device 100 operates in a state in which both the contacts of the key box 9 and the switch 6 are connected to each other so that the brake lever 2 is not locked. That is, the power supply is connected to the solenoid device with the key box connected to the power supply and the driver tightening or fastening the brake lever, and the fastener is inserted into the housing to release the lock. In some cases, the key-box contacts are connected but the switch contacts are short-circuited and the solenoid device is inoperative. That is, there is a problem (overload, waste of power) that occurs when the solenoid device is continuously operated while the vehicle is running. In order to solve this problem, in the state in which the brake lever is released, the switch contact is blocked by the lever lower protrusion 2a, and the fastener 101 in the solenoid device protrudes in the fastening hole 105. In FIG. When switching from the state to the state of A, that is, driving and stopping for a while to engage the brake lever, the switch must be moved by the play between the moving contact 6b and the fixed contact 6a about the hinge axis 7. 5C is generally a case where the brake is not engaged while the start is turned off during parking or stopping, and the solenoid device does not operate with the contact points of the key box and the switch shorted. That is, the fastener 101 of the solenoid device 100 that is not supplied with power due to a short circuit between the start key box 9 and the switch 6 while the start is turned off and the brake lever 2 is released. The lever is protruded by the spring restoring force, and the lever is locked. In the above state, the lever can be engaged in the direction of engaging the brake lever. In other words, the end of the fastener that protrudes into the inside of the fastening hole is inclined obliquely in the direction of the lever fastening direction, and when the lever is fastened, the fastening hole slides to allow the fastening to be repeatedly inserted and protruded into the housing. D is a case where the brake lever is fastened while the start is turned off while parking or stopping. The switch contact is connected, but the contact of the key box is shorted so that the solenoid device is not operated. It is impossible. That is, it is impossible to release the brake lever in the locked state because the two end surfaces of the protruding fastener and the surface of the fastening hole are perpendicular to the direction of the force transmitted from the lever.

This prevents power wastage and overload caused by the solenoid being operated while driving, and the locking device is automatically operated according to the situation regardless of whether the lever is operated during parking / stopping or driving. It is possible to construct and operate the locking device more economically and efficiently than the conventional method of sensing / controlling with a sensor or a vehicle CPU.

As described above, according to the locking device of the parking brake according to the present invention, it is possible to prevent the unwanted release of the parking brake while the ignition is turned off, thereby protecting the passenger from the potential dangers of theft and misoperation on the slope, and According to whether the box 9 and the switch 6 are connected to the power supply or not, the solenoid locking device is operated or released, so that the driver does not need a separate operation for locking and releasing the convenience.

While significantly reducing manufacturing costs compared to conventional techniques, the performance and convenience of operation are further increased. In addition, even if the driver does not operate or consciously operate the locking device, the vehicle can be locked and released in accordance with the driving state, thereby preventing theft and misoperation.

Claims (4)

In the parking brake of a vehicle, A solenoid device (100) mounted on the lever (2) constituting the parking brake; A fastener 101 in the solenoid device; A fastening hole 105 serving as a fastener of the fastener 101 drilled in the ratchet 5 to serve as a fastener of the fastener; A key box 9 involved in power connection of the vehicle and driving the solenoid device when the power is connected; A battery 10 for supplying power to the vehicle; A switch 6 for driving the solenoid device when the parking brake is released; Solenoid device 100, the switch (6), the key box (9), the battery (10) is an automatic parking brake lock device, characterized in that the configuration of a series circuit. The method of claim 1, The end portion of the fastener 101 has a shape in which the lever 2 is fastened in an obliquely inclined shape, and a surface in the lever release direction is parallel to the surface of the fastening hole 105 so that the fastening hole releases the brake lever. Constrained to move in the lever engagement direction; The fastening hole drilled in the ratchet to act as the fastener and the fastener to be fastened to form a movement path by forming a space in the trajectory of the arc with the rivet hinge axis (7) as the axial center, and according to the movement path in a specific position Automatic parking brake lock device characterized in that it has a seating hole closely connected to be fastened with the fastener. Claim 3 has been deleted. Claim 4 has been deleted.